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Finding the Fourth Proportional to 750,406.61, 1,035,556.37 and 406,240.03

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Solution

The fourth proportional to 750,406.61, 1,035,556.37 and 406,240.03 is: 560,608.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,406.61 : 1,035,556.37 = 406,240.03 : x
  2. Step 2: Convert to fraction form
    750,406.61/1,035,556.37 = 406,240.03/x
  3. Step 3: Cross multiply
    750,406.61x = 1,035,556.37 × 406,240.03
  4. Step 4: Simplify right side
    750,406.61x = 420,684,446,538.83
  5. Step 5: Solve for x
    x = 420,684,446,538.83/750,406.61
  6. Step 6: Final answer
    x = 560,608.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.